Display screen with an animated graphical user interface



FIG. 1 is a front view of a first image in a sequence for a display screen with an animated graphical user interface showing the claimed design; and,

FIG. 2 is a front view of a second image thereof.

The appearance of the transitional image sequentially transitions between the images shown in FIGS. 1-2. The process or period in which one image transitions to another image forms no part of the claimed design. The broken lines in the figures showing a display screen, electronic device, and portions of the graphical user interface are for illustrative purposes only and form no part of the claimed design. 

CLAIM The ornamental design for a display screen with an animated graphical user interface, as shown and described. 